BASIC DYSRHYTHMIA EXAM SCRIPT VERIFIED QUESTIONS WITH FULL SOLUTION

BASIC DYSRHYTHMIA EXAM SCRIPT
VERIFIED QUESTIONS WITH FULL
SOLUTION

●● 60-100
Answer: inherent rate of the SA node


●● 40-60
Answer: inherent rate of the AV node


●● 20-40
Answer: inherent rate of the ventricles (purkinjie fibers)


●● systole
Answer: phase of contraction


●● diastole
Answer: phase of relaxation


●● p wave
Answer: what does atrial depolarization show on the ECG?

,●● QRS complex
Answer: what does ventricle depolarization show on the ECG?


●● T wave
Answer: what does repolarization show on the ECG?


●● increase
Answer: what does sympathetic stimulation do to the heart rate?


●● decrease
Answer: what does parasympathetic stimulation do to the heart rate?


●● absolute refractory period
Answer: the period immediately following the firing of a nerve fiber
when it cannot be stimulated no matter how great a stimulus is applied


●● relative refractory period
Answer: during the ventricular cardiac cycle when all cardiac cells are
not fully repolarized and a strong enough stimulus can excite cardiac
tissue and initiate arrhythmias


●● last half of t wave

, Answer: When is the relative refractory period of the ventricles?


●● .20 secs
Answer: how much time is one large box in an ecg strip?


●● .04 secs
Answer: how much time is one small box in an ecg strip?


●● 0.12-0.20
Answer: normal range of PR interval


●● 0.04-0.12
Answer: normal range of QRS complex


●● less than 1/2 the preceding R-R interval
Answer: what is the normal time of the QT?


●● p to p
Answer: how do you measure the atrial rate?


●● R to R
Answer: how do you measure the ventricular rate?